The distance between City K and City L was 890 km apart. A convertible travelled at an average speed of 90 km/h from City K to City L. At the same time, a lorry travelled at an average speed of 88 km/h from City L to City K. How much further did the convertible travel than the lorry when the convertible met the lorry on the way?
Combined speed of the convertible and the lorry
= 90 + 88
= 178 km/h
Time taken for the convertible and the lorry to meet
= 890 ÷ 178
= 5 h
Difference in the speed between the convertible and the lorry
= 90 - 88
= 2 km/h
Distance that the convertible travelled further than the lorry
= 5 x 2
= 10 km
Answer(s): 10 km